کد مقاله کد نشریه سال انتشار مقاله انگلیسی ترجمه فارسی نسخه تمام متن
5431494 1398022 2018 7 صفحه PDF ندارد دانلود رایگان
عنوان انگلیسی مقاله
Graphene structure boosts electron transfer of dual-metal doped carbon dots in photooxidation
ترجمه فارسی عنوان
ساختار گرافن انتقال الکترون را از نقاط کربن دوپ شده با فلز دوگانه در اکسیداسیون نوری افزایش می دهد
موضوعات مرتبط
مهندسی و علوم پایه مهندسی انرژی انرژی (عمومی)
چکیده انگلیسی

Carbon dots as a novel photocatalyst have attracted much attention, but they are still limited by their poor electron transfer properties. It is worth noting that graphene structures as a major component of carbon dots, play an important role in the electron transfer properties and photocatalysis. Herein, under different calcination temperature, carbon dots with various graphitization degrees were prepared from the mixture of EDTA-Fe and EDTA-Cu via a facile one-step pyrolysis. The graphitization degree of FeCu-CDs was proved by means of Raman, XRD and XPS spectra. The FeCu-CDs prepared at high temperature have higher graphitization degree and show excellent electron transfer ability. On the other hand, unsaturated metal dopants with mixed valence states (Fe2+, Fe3+, Cu+ and Cu2+) were fabricated and proved by XPS, ESR and FT-IR spectra, which are beneficial to further enhance both the electron donating/accepting abilities by changing their valence state. This higher graphitization degree and its synergy with dual metal dopants in FeCu-CDs can promote the photocatalytic efficiency in the photooxidation reaction of 1,4-DHP.

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ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Carbon - Volume 126, January 2018, Pages 128-134
نویسندگان
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